2661350334123 has 64 divisors (see below), whose sum is σ = 4046685350400. Its totient is φ = 1542263224320.

The previous prime is 2661350334109. The next prime is 2661350334187. The reversal of 2661350334123 is 3214330531662.

It is not a de Polignac number, because 2661350334123 - 2¹² = 2661350330027 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2661350354123) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170931283 + ... + 170946851.

It is an arithmetic number, because the mean of its divisors is an integer number (63229458600).

Almost surely, 2^{2661350334123} is an apocalyptic number.

2661350334123 is a deficient number, since it is larger than the sum of its proper divisors (1385335016277).

2661350334123 is a wasteful number, since it uses less digits than its factorization.

2661350334123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16972.

The product of its (nonzero) digits is 233280, while the sum is 39.

Adding to 2661350334123 its reverse (3214330531662), we get a palindrome (5875680865785).

The spelling of 2661350334123 in words is "two trillion, six hundred sixty-one billion, three hundred fifty million, three hundred thirty-four thousand, one hundred twenty-three".